OTF knife



FIG. 1 is a perspective view of an OTF knife, showing our new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a back view thereof.

The broken lines depict portions of the OTF knife in which the design is embodied that form no part of the claimed design. 

CLAIM We claim the ornamental design for an OTF knife, as shown and described. 